Improvement in railroad chairs and rails



" rail.

`. chair as used.`

PATENT OFFICE.

NELsoN W. NoRTHRURoE GREENE, NEw YORK.

IMPROVEMENT iN RAILROAD CHAIRS AND RAILS.

Specification forming part of Letters Patent- No. 35,537, dated June 10,1862.

To aZZwhont it inlay concern.- i

`Be it knownthat I, NELSON W. NORTHRUP,

' .of the town of Greene, county of Chenango,

State of New York, have invented a new and Improved Rail and Chair for Railroads, com-l bined; and I do hereby declare that the foll lowing is a full and exact description thereof, reference being had to the accompanying drawings, and to theletters marked thereon.

The nature of my invention consists in making a doubleheaded rail and the necessary chair tohold it of peculiar style, adapted to railroad purposes. y

`'Io `enable those skilled in the art to make and use'myl invention, `I will proceedV to de- `scribe its construction and operation.

Figure l isa side vie/w ofthe chair'and rail as putin full operation, showing the end of Fig. 2.sl1o\vs a top view of rails and Fig. l, B A constitute the chair. B is the i main` post,` made, the base of` any proper dimensions required, and having the jaw of equal height ofthe rail, with a recess, fi, to4

receive a part of the head of the rail c in the lower part, and` groove d, for the rib or flange b on the rail, and has a rest, a, for the u i upper head,`withits upperlface full up with `the top of the rail; the wholel face of the jaw fitting to the face ofthe rail on the outside of the track, and also forming a continuous lap or splice to the rail when the ends do not meet in the chair.

A, Figs. l and 2, is the inner and movable jaw of. the chair, with recess fi, Fig. 1, and

groove d, for the flange orrib b, and fitting under the upper head, c, with its face to iit the inner face ofthe rail from the shoulderl of the upper head at a to the base. To keep the inner or movable jaw firmly in place, I make a lip-iiange, o, Fig. l, wedging to the center s s s, Fig. 2, as shown, and the movable jaw shaped to `fit the groove p under the lip, so that it will be `firmly wedged against the rail when driven toits place. `In the follower or movable jaw A, I make acurveslot, r, also one reversedin the lower part of the chairt, the

ends of which meet and match over n t'o receive a spike driven in to prevent the possibility of the movable jaw getting loose, except by drawing the spike, and which, if crowded toward the rail, will incline the jaw still tighter.

The rail c c, Fig. 1, and c, Fig. 2, I make as shown in Fig. l, c c, bpb, a a a a, the heads alike, with a shoulder on each side under the head a a a a, with airib or flange, b b, the' whole length of the rail on bothsides or faces, so that I can affix intermediate chairs at any place required. The advantage of a rail made in this way is to make it last twice as long as when made with one head, and not necessa` rily any more cost to lay the track. The advantage of the chairs in the style I make them, which, in addition to whatis before described, I make the movable jaw in alternate pairs, right and left, to insure a rm and steady support of the rail on the outside of the track near the top ofthe rail, and by the alternate movable jaw the rail cannot be movedlengthwise of rail by the drawing strain of the engine approaching from either way, ,although the spike at n, Fig. 2,- might be out in every chair; but as malicious persons could easily knock out the movable jaw, I insert thespike u to guard against their evil designs, and therefore will only have to draw one spike at each chair to take out a rail, which can be done in a few moments, and if only the movable jaw is driven at the ends of the rail a train can pass in safty, the outside jaw on each chair bracing the rail against the sway of the train right and left.

What I claim as my invention, is-M A double-headed rail, with the ribs or flanges and shoulders, with the chair con1- posed -of the two jaws, grooves,flanges, slots and wedge-shaped movable jaw, combined as specified, and for the purposes set forth.

NELSON WT. NORTHRUP. 

